222217431947776 has 40 divisors (see below), whose sum is σ = 446453889005124. Its totient is φ = 110494855618560.

The previous prime is 222217431947713. The next prime is 222217431947807. The reversal of 222217431947776 is 677749134712222.

It can be written as a sum of positive squares in 2 ways, for example, as 169489153440000 + 52728278507776 = 13018800^2 + 7261424^2 .

It is a super-2 number, since 2×222217431947776² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198853245 + ... + 1199038588.

Almost surely, 2^{222217431947776} is an apocalyptic number.

It is an amenable number.

222217431947776 is an abundant number, since it is smaller than the sum of its proper divisors (224236457057348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222217431947776 is an equidigital number, since it uses as much as digits as its factorization.

222217431947776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397892032 (or 2397892016 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 64.

The spelling of 222217431947776 in words is "two hundred twenty-two trillion, two hundred seventeen billion, four hundred thirty-one million, nine hundred forty-seven thousand, seven hundred seventy-six".